package com.viettel.pon.common;

import java.io.IOException;
import java.net.InetAddress;
import java.net.InetSocketAddress;
import java.net.Socket;
import java.net.UnknownHostException;

import javax.net.ssl.SSLContext;
import javax.net.ssl.SSLSocket;
import javax.net.ssl.TrustManager;

import org.apache.http.conn.ConnectTimeoutException;
import org.apache.http.conn.scheme.LayeredSocketFactory;
import org.apache.http.conn.scheme.SocketFactory;
import org.apache.http.params.HttpConnectionParams;
import org.apache.http.params.HttpParams;

public class SSLSocketFactory implements SocketFactory, LayeredSocketFactory {

private SSLContext sslcontext = null;

private static SSLContext createEasySSLContext() throws IOException {
   try {
       SSLContext context = SSLContext.getInstance("TLS");
       context.init(null, new TrustManager[] { new EasyX509TrustManager(null) }, null);
       return context;
   } catch (Exception e) {
       throw new IOException(e.getMessage());
   }
}

private SSLContext getSSLContext() throws IOException {
   if (this.sslcontext == null) {
       this.sslcontext = createEasySSLContext();
   }
   return this.sslcontext;
}

/**
* @see org.apache.http.conn.scheme.SocketFactory#connectSocket(java.net.Socket, java.lang.String, int,
*      java.net.InetAddress, int, org.apache.http.params.HttpParams)
*/
public Socket connectSocket(Socket sock, String host, int port, InetAddress localAddress, int localPort,
       HttpParams params) throws IOException, UnknownHostException, ConnectTimeoutException {
   int connTimeout = HttpConnectionParams.getConnectionTimeout(params);
   int soTimeout = HttpConnectionParams.getSoTimeout(params);
   InetSocketAddress remoteAddress = new InetSocketAddress(host, port);
   SSLSocket sslsock = (SSLSocket) ((sock != null) ? sock : createSocket());

   if ((localAddress != null) || (localPort > 0)) {
       // we need to bind explicitly
       if (localPort < 0) {
           localPort = 0; // indicates "any"
       }
       InetSocketAddress isa = new InetSocketAddress(localAddress, localPort);
       sslsock.bind(isa);
   }

   sslsock.connect(remoteAddress, connTimeout);
   sslsock.setSoTimeout(soTimeout);
   return sslsock;

}

/**
* @see org.apache.http.conn.scheme.SocketFactory#createSocket()
*/
public Socket createSocket() throws IOException {
   return getSSLContext().getSocketFactory().createSocket();
}

/**
* @see org.apache.http.conn.scheme.SocketFactory#isSecure(java.net.Socket)
*/
public boolean isSecure(Socket socket) throws IllegalArgumentException {
   return true;
}

/**
* @see org.apache.http.conn.scheme.LayeredSocketFactory#createSocket(java.net.Socket, java.lang.String, int,
*      boolean)
*/
public Socket createSocket(Socket socket, String host, int port, boolean autoClose) throws IOException,
       UnknownHostException {
   return getSSLContext().getSocketFactory().createSocket(socket, host, port, autoClose);
}

//-------------------------------------------------------------------
//javadoc in org.apache.http.conn.scheme.SocketFactory says :
//Both Object.equals() and Object.hashCode() must be overridden
//for the correct operation of some connection managers
//-------------------------------------------------------------------

public boolean equals(Object obj) {
   return ((obj != null) && obj.getClass().equals(SSLSocketFactory.class));
}

public int hashCode() {
   return SSLSocketFactory.class.hashCode();
}

}
